Stop beeping hour?
According to the directions: Press B - bottom left button,to go into Alarm Mode. Press D - upper right button - to activate the alarm and press again to activate the Chime, which shows on bottom left as a bell. To activate these press D. To DEACTIVATE them press D again. Press B 3 times to return to Time Telling Mode. It took a few tries, but D and B are the keys to stopping that annoying chime!
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